Solutions by everydaycalculation.com
1st number: 4 0/3, 2nd number: 16/21
123 + 1621 is 10021.
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Related: 24/3+16/21 12/3+32/21 12/6+16/21 12/3+16/42 36/3+16/21 12/3+48/21 12/9+16/21 12/3+16/63 60/3+16/21 12/3+80/21 12/15+16/21 84/3+16/21 12/21+16/21
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